Simultaneity and coincidence are the essential features which connect Viola and Sebastian in Twelfth Night. Twins, after all, are born at the same time and coincide in one womb. Indeed, Sebastian identifies himself as Viola's twin, rather than merely her brother: "He [Sebastian of Messaline] left behind him myself and a sister, both born in an hour: if the heavens had been pleased, would we had so ended!"1 Though Viola never reveals that her brother is her twin until she is mistaken for him, Sebastian begins his existence in the play as a twin and, just as importantly, as a displaced twin. His lament for lost simultaneity is followed in the next scene by Viola's response to her own emotional quandary: "O time, thou must untangle this, not I, / It is too hard a knot for me t'untie" (2.2.39-40). For both twins...